Toxoplasma gondii is the most widespread parasite on earth, found across all continents and in a staggering variety of habitats. We have only recently discovered how many different animals it infects. To the surprise of many, University of British Columbia scientists found the parasite in beluga whales in the Arctic in 2014. Off the California coast, Toxoplasma infection has been revealed to be responsible for sea otter deaths formerly attributed to sharks or boats.